公开(公告)号：US20240414347A1

公开(公告)日：2024-12-12

申请号：US18809072

申请日：2024-08-19

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Shan LIU

IPC: H04N19/132 ,  H04N19/176 ,  H04N19/30 ,  H04N19/46

Abstract: A method, computer program, and computer system are provided for video coding. The video coding includes decoding one or more previously encoded frames of a video source that are designated as reference frames for the video source, searching the reference frames for one or more candidate pixel blocks for an input frame of the video source, and encoding the input frame based on the one or more candidate pixel blocks.

公开(公告)号：US20240414322A1

公开(公告)日：2024-12-12

申请号：US18808959

申请日：2024-08-19

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Shan LIU ,  Stephan WENGER

IPC: H04N19/105 ,  H04N19/127 ,  H04N19/139 ,  H04N19/172 ,  H04N19/189 ,  H04N19/196 ,  H04N19/42

Abstract: A method, computer program, and computer system is provided for coding video data. Video data including a current picture and one or more other pictures is received. A first flag corresponding to whether the current picture is referenced by the one or more other pictures in a decoding order is checked. A second flag corresponding to whether the current picture is output; is checked. The video data is decoded based on values corresponding to the first flag and the second flag.

公开(公告)号：US20240187630A1

公开(公告)日：2024-06-06

申请号：US18443861

申请日：2024-02-16

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Stephan WANGER ,  Shan LIU

IPC: H04N19/46 ,  H04N19/105 ,  H04N19/159 ,  H04N19/169 ,  H04N19/172

CPC classification number: H04N19/46 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/188

Abstract: Systems and methods for decoding a coded video stream are provided. A method includes receiving a coded video stream that includes an access unit, including a picture; signaling a first flag that indicates whether the access unit includes either or neither one from among an intra random access point (IRAP) picture and a gradual decoding refresh (GDR) picture; signaling a second flag that indicates whether the picture is the IRAP picture; and decoding the picture, as a current picture, based on the signaling of the first flag and the second flag, wherein a value of the first flag and a value of the second flag are aligned.

公开(公告)号：US20240187621A1

公开(公告)日：2024-06-06

申请号：US18404209

申请日：2024-01-04

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Shan Liu ,  Stephan Wenger

IPC: H04N19/44 ,  H04N19/503

CPC classification number: H04N19/44 ,  H04N19/503

Abstract: A method and system for decoding a coded video sequence may include obtaining the coded video sequence, and decoding the coded video sequence. A a value of a temporal sublayer identifier of a video coding layer (VCL) network abstraction layer (NAL) unit in the coded video sequence is constrained to be less than or equal to a value of vps_max_sublayers_minus1, that specifies a maximum number of temporal sublayers that may be present in a layer in each coded video sequence referring to the video parameter set (VPS), in the VPS referred to by the VCL NAL unit.

公开(公告)号：US20240007680A1

公开(公告)日：2024-01-04

申请号：US18368791

申请日：2023-09-15

Applicant: TENCENT AMERICA LLC

Inventor： Arash VOSOUGHI ,  Sehoon YEA ,  Shan LIU ,  Byeongdoo CHOI ,  Stephan WENGER

IPC: H04N19/91 ,  H04N19/167 ,  H04N19/119 ,  H04N19/172

CPC classification number: H04N19/91 ,  H04N19/167 ,  H04N19/119 ,  H04N19/172

Abstract: A method of dynamic point cloud partition packing is by at least one processor and includes obtaining one or more region of interest (ROI) patches from an ROI of a point cloud, and attempting to pack, into one among tiles of a tile map, one among the obtained one or more ROI patches, in a tile scan order. The method further includes identifying whether the one among the one or more ROI patches is packed successfully into the one among the tiles, and based on the one among the one or more ROI patches being determined to be not packed successfully into the one among the tiles, chunking the one among the one or more ROI patches into multiple ROI patches.

公开(公告)号：US20230379486A1

公开(公告)日：2023-11-23

申请号：US18307865

申请日：2023-04-27

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Shan LIU

IPC: H04N19/44 ,  H04N19/176 ,  H04N19/129 ,  H04N19/70

CPC classification number: H04N19/44 ,  H04N19/176 ,  H04N19/129 ,  H04N19/70

Abstract: A method and apparatus for video decoding includes decoding a binary coded syntax element carrying an identification of a picture segment in a high level syntax structure comprising fixed length codewords and reconstructing the picture segment.

公开(公告)号：US20230328290A1

公开(公告)日：2023-10-12

申请号：US18332477

申请日：2023-06-09

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Shan LIU ,  Stephan WENGER

IPC: H04N19/70

CPC classification number: H04N19/70

Abstract: In a method of video encoding in an encoder, a determination is made as to whether to encode a first scope of coded video data in a bitstream with a second coding tool. The second coding tool is an alternative coding tool to a first coding tool for Rice parameter derivation in residual coding. In response to a determination that the first scope of coded video data is not encoded with the second coding tool, a first syntax element is determined as a first value indicating that the second coding tool is disabled in the first scope of the coded video data and a video bitstream of the first scope of coded video data is encoded without invoking the second coding tool. The first syntax element is associated with the second coding tool.

公开(公告)号：US20230102088A1

公开(公告)日：2023-03-30

申请号：US17710694

申请日：2022-03-31

Applicant: Tencent America LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Shan LIU

IPC: H04N19/70 ,  H04N19/14 ,  H04N19/169 ,  H04N19/172

Abstract: Aspects of the disclosure provide methods and apparatuses for video data processing. In some examples, an apparatus for video data processing includes processing circuitry. The processing circuitry determines that profile information of a bitstream is indicative of a profile for operation range extension with a bitdepth higher than a predetermined value. Then, then the processing circuity checks at least a syntax element of the bitstream to determine whether the syntax element of the bitstream satisfies a constraint that is indicative of a single layer for outputting at a decoder for decoding the bitstream.

公开(公告)号：US20220417543A1

公开(公告)日：2022-12-29

申请号：US17850581

申请日：2022-06-27

Applicant: Tencent America LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Xiang LI ,  Shan LIU

IPC: H04N19/44 ,  H04N19/597 ,  H04N19/169 ,  H04N19/172 ,  H04N19/46

Abstract: Aspects of the disclosure provide a method, an apparatus, and non-transitory computer-readable storage medium for video decoding. The apparatus includes processing circuitry. The processing circuitry can decode, from a bitstream, pictures associated with views of respective layers in a coded video sequence (CVS). The processing circuitry is configured to determine, based on a first supplemental enhancement information (SEI) message and a second SEI message, positions of the views to be displayed in one dimension. The first SEI message includes scalability dimension information (SDI) and the second SEI message includes multiview view position (MVP) information. The processing circuitry is configured to display the decoded pictures based on the positions of the views in the one dimension.

公开(公告)号：US20220345738A1

公开(公告)日：2022-10-27

申请号：US17859569

申请日：2022-07-07

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Shan LIU

IPC: H04N19/51 ,  H04N19/172 ,  H04N19/132 ,  H04N19/70

Abstract: A method of generating an encoded video bitstream using at least one processor, including making a first determination regarding whether a current layer of a current picture is an independent layer; making a second determination regarding whether reference picture resampling is enabled for the current layer; based on the first determination and the second determination, disabling wrap-around compensation for the current layer; and encoding the current layer without the wrap-around compensation.